This bipod is all PVC construction for a light weight design.  The legs lock solidly in the down position with downward pressure enabling the user to assume prone position with minimal effort.  To return legs to the folded position just loosen one of the legs.  Easily mounted on the schrader valve already on the cannon.   Bipod will fit the P.A.C. 3.

For more pictures look at my P.A.C. 3 page.

A simple Bipod could be make with an elbow and two pieces of PVC.